scholarly journals ANALISA PENYEBAB TINGGINYA SUHU GAS BUANG DUAL FUEL DIESEL ENGINE DENGAN METODE FAULT TREE ANALYSIS

2018 ◽  
Vol 9 (1) ◽  
pp. 2137-2150
Author(s):  
Nono Sukirno ◽  
Dwi Prasetyo ◽  
Moh. Aziz Rohman
Keyword(s):  
Diesel Engine ◽  
Natural Gas ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Dual Fuel ◽  
Gas Oil ◽  
Tree Analysis ◽  
Instruction Manual ◽  
Methane Gas

Dual Fuel Diesel Engine (Mesin Bahan Bakar Ganda) merupakan mesin denganpemanfaatan dua bahan bakar dalam proses pembakarannya untuk memperoleh tenaga kerjapada mesin. Jenis bahan bakar yang digunakan meliputi bahan bakar Methane Gas (CH4)dan MGO (Marine Gas Oil). Methane (CH4) dihasilkan dari Vapour Cargo Tank LNG(Liquified Natural Gas). Tujuan dari penelitian ini adalah untuk mengetahui apa sajapenyebab tingginya suhu gas buang terhadap kinerja Dual Fuel Diesel Engine di MV.Tangguh Palung dengan menggunakan metode analisis data Fault Tree Analysis. Darianalisis data penelitian di hasilkan beberapa rumusan masalah yaitu, faktor-faktor yangdapat menyebabkan tingginya suhu gas buang pada Dual Fuel Diesel Engine adalahkurangnya suplai udara pembakaran dalam ruang pembakaran mesin, komposisipembakaran yang tidak sesuai antara bahan bakar minyak dan gas, serta suhu Engine Roomyang terlalu panas. Dampak yang di timbulkan adalah kerusakan pada komponen-komponenpermesinan dan penurunan kinerja dari Dual Fuel Diesel Engine. Untuk mengatasipenurunan kerja pada Dual Fuel Diesel Engine adalah dengan melaksanakan perawatan danperbaikan pada setiap komponen permesinan yang mengalami masalah dan kerusakan sesuaidengan Running Hours dan Instruction Manual Book.

scholarly journals ANALISIS RISIKO KECELAKAAN KERJA DENGAN METODE FAILURE MODE AND EFFECT ANALYSIS (FMEA) DAN FAULT TREE ANALYSIS (FTA) UNTUK MENURUNKAN TINGKAT RISIKO KECELAKAAN KERJA (PT. BERKAH MIRZA INSANI)

2020 ◽  
Vol 2 (1) ◽  
pp. 48
Author(s):  
Sofian Bastuti
Keyword(s):  
Natural Gas ◽  
Failure Mode ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Pressure Regulator ◽  
Compressed Natural Gas ◽  
Effect Analysis ◽  
Tree Analysis

PT. Berkah Mirza Insani yang bergerak dibidang pengolahan gas alam menjadi Compressed Natural Gas (CNG) dalam setiap pekerjaan nya selalu mengutamakan Keselamatan dan Kesehatan Kerja (K3) . Penelitian ini mengaplikasikan metode Failure Mode and Effect Analysis (FMEA) didapat RPN tertinggi atau di divisi produksi yang mencakup 8 pekerjaan adalah pada Proses dan langkah pensupplyan CNG ke costumer (operasional PRS) dengan nilai severity 5, occurence 3, detection 4 dan RPN 60. Sedangkan Fault Tree Analysis (FTA) didapat faktor penyebab tingkat risiko tertinggi yaitu Proses dan langkah pensupplyan CNG ke costumer (operasional PRS) saat unloading dan operasional CNG dengan potensi bahaya ledakan Pressure Regulator System (PRS).

scholarly journals Investigating the likelihood of catastrophic events in natural gas pipelines using an integration of fault tree analysis and What-if methods

Sigurnost ◽  
2016 ◽  
Vol 58 (1) ◽  
pp. 19-30
Author(s):  
Mehrzad Ebrahemzadih ◽  
Payam Amer Haedari
Keyword(s):  
Natural Gas ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Gas Pipelines ◽  
Catastrophic Events ◽  
Tree Analysis ◽  
Natural Gas Pipelines

SAŽETAK: Prirodni plin danas se smatra najvećim izvorom energije potrebne stambenim područjima i industriji. Pogled na tehnologije kojima se Iran koristi otkriva da su plinovodi najbolji i najsigurniji način za distribuciju prirodnog plina u zemlji. Ovaj izvor energije, koji se ponekad naziva čistim gorivom, ima stratešku ulogu u opskrbi potrebne energije. S druge strane, opskrba gorivom mora biti stalna, ali i sigurna. Stoga se zaključuje da su potrebne odgovarajuće mjere za upravljanje rizicima od curenja, požara i eksplozija na ovakvim postrojenjima. Za postizanje toga cilja najpotrebnije je ustanoviti uzroke nesreća i ispitati pouzdanost. Nadalje, neizbježno se mora procijeniti vjerojatnost događanja nesreće na cjevovodima. Jedan od ključnih koraka u procesu vrednovanja rizika jest procjena vjerojatnosti mogućih nesreća. Članak se koristi FTA (fault tree analysis) metodologijom za proučavanje načina procjene vjerojatnosti nesreća na cjevovodima za prirodni plin. Nadalje, ponuđena je i nova metoda temeljena na pridruživanju težina stablu kvarova, a ‘what-if’ (što-ako) scenarij služi za utvrđivanje opasnosti pri transportu prirodnog plina od njegova glavnog izvora. Na osnovi rezultata studije predlaže se da se vjerojatnost događanja nesreća na cjevovodima za prirodni plin kontrolira tehničkim i sustavnim pristupom kojim se utvrđuju i kontroliraju uzroci tih nesreća.

Combustion Characteristics of a Dual Fuel Diesel Engine With Natural Gas (Influence of Cetane Number of Ignition Fuel)

2011 ◽  
Author(s):  
Yasufumi Yoshimoto ◽  
Eiji Kinoshita
Keyword(s):  
Diesel Engine ◽  
Natural Gas ◽  
Cetane Number ◽  
Engine Performance ◽  
Mean Value ◽  
Combustion Characteristics ◽  
Combustion Stability ◽  
Dual Fuel ◽  
Gas Oil ◽  
Performance And Emission

This paper investigates the performance, exhaust emissions, and combustion characteristics of a dual fuel diesel engine fueled by CNG (compressed natural gas) as the main fuel. The experiments used standard ignition fuels prepared by n-hexadecane and heptamethylnonane which are used to define the ignitability of diesel combustion, and focused on the effects of fuels with better ignitability than ordinary gas oil such as fuels with higher cetane numbers, 70 and 100. Compared with gas oil ignition, a standard ignition fuel with C.N. 100 showed shorter ignition delays, and lower NOx exhaust concentrations, and engine noise. The results also showed that regardless of ignition fuel, misfiring occurred when the CNG supply was above 75%. While the CNG ratio where misfiring occurs lowered somewhat with increasing C.N., the combustion stability (defined as the standard deviation in the cycle to cycle variation of IMEP divided by the mean value of IMEP) was little influenced. In summary, the results show that the influence of the ignitability on the engine performance and emission characteristics of the dual fuel operation is relatively small when the ignition fuel has C.N., and similar to or higher than ordinary gas oil.

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